WO2021184272A1 - Procédé et appareil de transmission de données, dispositif de communication et support de stockage - Google Patents

Procédé et appareil de transmission de données, dispositif de communication et support de stockage Download PDF

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Publication number
WO2021184272A1
WO2021184272A1 PCT/CN2020/080071 CN2020080071W WO2021184272A1 WO 2021184272 A1 WO2021184272 A1 WO 2021184272A1 CN 2020080071 W CN2020080071 W CN 2020080071W WO 2021184272 A1 WO2021184272 A1 WO 2021184272A1
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Prior art keywords
duration
frame
data frame
transmission
data
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PCT/CN2020/080071
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English (en)
Chinese (zh)
Inventor
董贤东
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2020/080071 priority Critical patent/WO2021184272A1/fr
Priority to US17/912,192 priority patent/US20230147839A1/en
Priority to CN202080000558.3A priority patent/CN113692717A/zh
Publication of WO2021184272A1 publication Critical patent/WO2021184272A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H04L1/1678—Details of the supervisory signal the supervisory signal being transmitted together with control information where the control information is for timing, e.g. time stamps

Definitions

  • This application relates to the field of wireless communication technology, but is not limited to the field of wireless communication technology, and in particular to data transmission methods, devices, communication equipment, and storage media.
  • the main features of the new generation of mainstream Wi-Fi technology are the use of a high 320MHz transmission bandwidth, and the use of multiple frequency band aggregation and collaboration technologies. Compared with the existing IEEE802.11ax, the rate and throughput are increased by at least four times.
  • the main application scenarios of the new technology are video transmission, augmented reality (AR, Augmented Reality), virtual reality (VR, Virtual Reality), etc.
  • the aggregation and collaboration technology of multiple frequency bands refers to the simultaneous communication between Wi-Fi devices in the 2.4GHz, 5.8GHz and 6-7GHz frequency bands.
  • the embodiments of the present disclosure provide a data transmission method, device, communication device, and storage medium.
  • a data transmission method wherein, when applied to a first communication device, the method includes:
  • determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes:
  • the duration indication information is determined, where the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • the determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes: when the data frame is successfully received, making the duration indicated by the duration indication information Is 0.
  • a data transmission method wherein, when applied to a second communication device, the method includes:
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the determining the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame includes:
  • the duration field in the media access control MAC frame header of the first confirmation message frame determine the duration for continuing to occupy the transmission connection.
  • a data transmission method wherein, when applied to a third communication device, the method includes:
  • NAV Network Allocation Vector
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the setting NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame includes:
  • the NAV is set according to the duration of continuing to occupy the transmission connection as indicated by the length field in the physical frame header of the first confirmation message frame.
  • the setting NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame includes:
  • the duration of avoidance is updated using the duration.
  • the setting NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame includes:
  • the NAV In response to the duration of time being less than or equal to the avoidance time period in which the NAV instructs to keep silent on the transmission connection, the NAV is maintained.
  • a data transmission device which is applied to a first communication device, and the device includes: a first determining module and a sending module, wherein,
  • the first determining module is configured to determine the duration indication information according to the reception status of the data frame in the multi-transport connection transmission, where the duration indication information is used to indicate the duration of the continuous occupation of the transmission connection;
  • the sending module is configured to send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the first determining module includes:
  • the first determining submodule is configured to determine the duration indication information when the data frame fails to be received, wherein the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • the first determining module includes:
  • the second determining submodule is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the first determining module includes:
  • the third determining sub-module is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the first determining module includes:
  • the fourth determining submodule is configured to make the duration indicated by the duration indication information 0 when the data frame is successfully received.
  • a data transmission device which is applied to a second communication device, and the device includes: a first receiving module, a second determining module, and a third determining module, wherein,
  • the first receiving module is configured to receive a first confirmation message frame
  • the second determining module is configured to determine the reception status of the data frame in the transmission of the multi-transport connection according to the feedback information in the first confirmation message frame;
  • the third determining module is configured to determine the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame, wherein the duration indication information is based on the duration of the data frame. State the receiving status.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the third determining module includes:
  • the fifth determining submodule is configured to determine the duration of continuing to occupy the transmission connection according to the indication of the duration field in the media access control MAC frame header of the first confirmation message frame.
  • a data transmission device which is applied to a third communication device, and the device includes: a second receiving module and a setting module, wherein,
  • the second receiving module is configured to receive a first confirmation message frame
  • the setting module is configured to set a network allocation vector NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame, wherein the duration indication information is based on multiple transmission connections The reception status of the data frame during transmission.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the setting module includes:
  • the second setting submodule is configured to set the NAV according to the duration of the continuous occupation of the transmission connection indicated by the length field in the physical frame header of the first confirmation message frame.
  • the setting module includes:
  • the third setting submodule is configured to update the avoidance duration by using the continuous duration in response to the duration being greater than the avoidance duration for keeping silent on the transmission connection indicated by the NAV.
  • the setting module includes:
  • the fourth setting sub-module is configured to maintain the NAV in response to the avoidance duration in which the duration is less than or equal to the NAV instruction to keep silent in the transmission connection.
  • a data transmission device including a processor, a memory, and an executable program stored on the memory and capable of being run by the processor, wherein the processor runs the When the program is executed, the steps of the data transmission method as described in the first aspect, the second aspect or the third aspect are executed.
  • a storage medium on which an executable program is stored, wherein the executable program is executed by a processor as described in the first, second or third aspect.
  • the steps of the data transmission method are described.
  • the data frame receiving end determines the duration indication information according to the receiving status of the data frame in the transmission of the multi-transmission connection, wherein the duration indication information is used for Indicate the duration of continuing to occupy the transmission connection; send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • Fig. 1 is a schematic flowchart of a data transmission method according to an exemplary embodiment
  • Fig. 2 is a schematic flowchart showing another data transmission method according to an exemplary embodiment
  • Fig. 3 is a schematic flowchart showing yet another data transmission method according to an exemplary embodiment
  • Fig. 4 is a block diagram showing a data transmission device according to an exemplary embodiment
  • Fig. 5 is a block diagram showing another data transmission device according to an exemplary embodiment
  • Fig. 6 is a block diagram showing yet another data transmission device according to an exemplary embodiment
  • Fig. 7 is a block diagram showing a device for data transmission according to an exemplary embodiment.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as second information, and similarly, the second information may also be referred to as first information.
  • word “if” as used herein can be interpreted as "when” or "when” or "in response to determination”.
  • the executive bodies involved in the embodiments of the present disclosure include but are not limited to: wireless communication networks, especially Wi-Fi networks, such as under the IEEE802.11a/b/g/n/ac standard, and under the IEEE802.11be standard in the next-generation Wi-Fi network Network equipment, including but not limited to: Wi-Fi routers and other wireless (AP, Access Point) access point equipment, wireless stations (STA, Station), user terminals, user nodes, mobile terminals or tablet computers, etc. .
  • Wi-Fi routers and other wireless (AP, Access Point) access point equipment wireless stations (STA, Station), user terminals, user nodes, mobile terminals or tablet computers, etc.
  • An application scenario of the embodiments of the present disclosure is that in the existing IEEE802.11 standard, after the data frame is transmitted, the data frame receiving end feeds back an acknowledgement message (ACK) frame to the data frame sending end, and the acknowledgement message frame can be divided into two Types: ACK frames for unicast data frames, and block acknowledgment messages (BA, Block ACK) for continuous data frames.
  • ACK acknowledgement message
  • BA Block ACK
  • the duration indicated by the duration field in the two confirmation message frames does not include the time required for retransmission of the data frame. If the data frame sender needs to retransmit the data frame, it needs to re-occupy the communication connection through competition or other means. In this way, the transmission delay of the data frame is lengthened and the transmission efficiency is reduced.
  • this exemplary embodiment provides a data transmission method.
  • the data transmission method may be applied to a first communication device of wireless communication.
  • the data transmission method may include:
  • Step 101 Determine the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission, where the duration indication information is used to indicate the duration of the continuous occupation of the transmission connection;
  • Step 102 Send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the wireless communication may be Wi-Fi communication using standards such as IEEE802.11be; the first communication device, the second communication device, and the third communication device may be wireless stations (STA, STAtion) or wireless access in Wi-Fi communication. Access point (AP, Access Point), etc.
  • the data frame may be a data frame that is separately transmitted in each of the multiple transmission connections.
  • the data frame may be a physical layer protocol data frame (PPDU, Physical Layer Protocol Data Unit).
  • the first communication device may be the receiving end of the data frame
  • the second communication device may be the sending end of the data frame
  • the third communication device may be other communication devices other than the receiving end of the data frame and the sending end of the data frame.
  • Data frames may include unicast data frames and continuous data frames.
  • Multi-transmission connection transmission can be a transmission that occupies multiple transmission frequency bands.
  • the transmission frequency band can be the Wi-Fi working frequency band, such as 2.4GHz, 5.8GHz and 6-7GHz, etc.; it can also be the frequency range of the bandwidth occupied by the transmission connection. Among them, the frequency range of the bandwidth occupied by each transmission connection may belong to the same Wi-Fi working frequency band, or may belong to different Wi-Fi working frequency bands.
  • the second communication device may use one of the multiple transmission connections to send a data frame, which is received by the first communication device.
  • the first communication device After the first communication device receives the data frame, it can determine the reception status of the data frame by means of parity check, cyclic redundancy check CRC, etc., and feedback the reception status of the data frame by sending the first confirmation message frame to the second communication device .
  • the first confirmation message frame may be an acknowledgement (ACK) frame or a non-acknowledgement (NACK) frame for the unicast data frame.
  • the first confirmation message frame may be a Block-ACK (Block-ACK) frame for the continuous data frame or the like.
  • the first confirmation message frame may carry feedback information, which is used to indicate the reception of the data frame.
  • the first confirmation message frame may use 1 bit or more bits to indicate the success or failure of the unicast data frame reception, for example, "0" may be used to indicate the failure of the data frame reception.
  • the first confirmation message frame can use a bitmap to indicate the reception of each data block in the continuous data frame.
  • “0” can be used to indicate that the data block has failed to be received, and “1” is used to indicate The data block is successfully received; “1” can also be used to indicate that the data block has failed to be received, and “0” can be used to indicate that the data block is successfully received.
  • the first communication device may indicate the failure of the reception of the data frame by sending the first confirmation message frame, and the second communication device may retransmit the data frame.
  • the second communication device may retransmit the unicast data frame.
  • the first communication device can indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the sub data frame may indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the first confirmation message frame may be provided with duration indication information indicating the duration.
  • the duration indication information is used to indicate that the first communication device continues to occupy the duration of the transmission connection for transmitting the first confirmation message frame.
  • the duration of continuing to occupy the transmission connection may be the duration of continuing to occupy the resource of the transmission connection.
  • the duration can be used to inform the third communication device of the duration of continued occupation of the communication connection, which is equivalent to that the third communication device stops competing for the communication connection within the duration, thereby reducing the transmission interference of the communication connection caused by competition, and improving Data transmission quality.
  • the third communication device determines the duration that the first communication device and the second communication device continue to occupy the transmission connection according to the duration indication information, and sets its own network allocation vector (NAV, Network Allocation Vector), keep silent on the transmission connection for this duration, so that the transmission between the first communication device and the second communication device is not interfered.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV.
  • the value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration can be determined according to the data frame reception situation. For example, if the data frame is successfully received, only the first confirmation message frame needs to be transmitted subsequently. Therefore, a shorter duration can be set. If the data frame fails to be received, the first confirmation message frame and the retransmission data frame need to be transmitted subsequently. Therefore, a longer duration can be set. In this way, the duration of continuous occupation of the transmission connection can be flexibly set according to the receiving status of the data frame and subsequent transmission requirements. It can reduce the resource waste caused by occupying the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration, thereby improving transmission efficiency.
  • the second communication device may determine the reception status of the data frame according to the feedback information, and determine the duration of continuing to occupy the transmission connection according to the duration indication information. If the data frame fails to be received, the data frame can be retransmitted within the duration. The transmission resource of the retransmitted data frame is no longer obtained through competition and other methods, thereby improving the transmission efficiency of the retransmitted data frame.
  • the duration of the transmission connection indicated by the first confirmation message frame determines the duration of the transmission connection indicated by the first confirmation message frame.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • step 101 may include:
  • the duration indication information is determined, where the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration may include: the transmission duration of the retransmitted data frame.
  • the third communication device can maintain silence on the transmission connection when the first communication device and the second communication device transmit the retransmitted data frame, thereby reducing interference to the transmission connection.
  • the transmission resources required to transmit the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the duration may include: the transmission duration of the first determined message frame, the transmission duration of the retransmitted data frame, and the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the third communication device may maintain silence on the transmission connection when the first communication device and the second communication device transmit the first confirmation message frame, the retransmission data frame, and the second confirmation message frame corresponding to the retransmission data frame, so as to reduce the interference. Interference in the transmission connection.
  • the transmission resources required to transmit the first definite message frame, the retransmitted data frame, and the second definite message frame corresponding to the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the transmission duration of the retransmitted data frame is the transmission duration of retransmission of one unicast data frame.
  • the first determined message frame may further include: retransmission instruction information, and the retransmission instruction information is used to indicate the rebroadcast of the data frame.
  • the second communication device After receiving the first determined message frame, the second communication device retransmits the unicast data frame based on the retransmission instruction information.
  • the retransmission indication information may be located in the Type field of the MAC frame header of the first determined message frame, and/or the Subtype field of the MAC frame header, and/or more data in the MAC frame header (more data) area.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the continuous data frame is divided into multiple data blocks to be sent separately.
  • the data block may be referred to as a data subframe.
  • the first confirmation message frame may be a block confirmation message frame, and a bitmap or the like may be used to indicate the reception status of each data block. For example, "0" can be used in the bitmap to indicate that the data block has failed to be received, and "1" can be used to indicate that the data block has been successfully received.
  • the second communication device After receiving the first definite message frame, the second communication device can only retransmit the data block that failed to be received. In this way, transmission resources can be saved.
  • the transmission duration of the retransmitted data frame may include: the transmission duration of the retransmitted data block, where there may be one or more retransmitted data blocks.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration may include the short inter-frame interval between adjacent data blocks.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • a short inter-frame interval can be set between the first confirmed message frame and the retransmitted data frame to provide processing time for the second communication device.
  • the first communication device After the first communication device receives the retransmitted data frame and sends the second confirmation message for the retransmitted data frame, the first communication device needs to determine the reception status of the retransmitted data frame, etc. Therefore, the 2. Determine to set a short inter-frame interval between message frames to provide processing time for the first communication device.
  • setting the duration based on the time requirement for the retransmission of the data frame can improve the accuracy of the duration and meet the requirement for the retransmission of the data frame.
  • step 101 may include:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the two short interframe intervals may be the short interframe interval between the first definite message frame and the retransmitted data frame, and the short interframe interval between the retransmitted data frame and the second definite message frame.
  • step 101 may include:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B represents the first determination
  • the transmission duration of the message frame and the second determined message frame (1+n)*SIFS represents 1+n short inter-frame intervals
  • n*data block transmission duration represents the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the n+1 short interframe interval may be the short interframe interval between the first definite message frame and the retransmitted data frame, the short interframe interval between the retransmitted data frame and the second definite message frame, and n retransmissions.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the duration can be indicated by the duration field in the MAC frame header and the length field in the physical frame header.
  • the second communication device may determine the duration through the duration field. Retransmit data frames etc. within the duration.
  • the MAC frame header can be parsed, and the duration can be determined by the duration field.
  • the third communication device may set NAV according to the duration indicated by the duration field.
  • the third communication device may first parse the physical frame header after receiving the first confirmation message frame, and determine the duration through the length field. Since the third communication device and the first communication device do not belong to the same BSS, the third communication device no longer analyzes the MAC frame header after analyzing the physical frame header. At this time, the third communication device may set NAV according to the duration indicated by the length field. In this way, by indicating the duration in the duration field and the length field respectively, the adaptability of the first confirmation message frame to communication devices of different BSSs is improved.
  • the third communication device After receiving the first confirmation message frame, the third communication device compares the avoidance duration indicated by its NAV. If the duration is longer than the avoidance duration, it means that the third communication device needs to be silent for a longer period of time. Therefore, the duration can be used to update the avoidance duration. duration.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • step 101 may include: when the data frame is successfully received, making the duration indicated by the duration indication information 0.
  • the duration can be set to 0, indicating that the first communication device and the second communication device no longer occupy the transmission connection.
  • this exemplary embodiment provides a data transmission method.
  • the data transmission method may be applied to a second communication device of wireless communication.
  • the data transmission method may include:
  • Step 201 Receive a first confirmation message frame
  • Step 202 Determine the receiving status of the data frame in the multi-transport connection transmission according to the feedback information in the first confirmation message frame;
  • Step 203 Determine the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame, where the duration indication information is based on the reception status of the data frame.
  • the wireless communication may be Wi-Fi communication using standards such as IEEE802.11be; the first communication device, the second communication device, and the third communication device may be wireless stations (STA, STAtion) or wireless access in Wi-Fi communication. Access point (AP, Access Point), etc.
  • the data frame may be a data frame that is separately transmitted in each of the multiple transmission connections.
  • the data frame may be a physical layer protocol data frame (PPDU, Physical Layer Protocol Data Unit).
  • the first communication device may be the receiving end of the data frame
  • the second communication device may be the sending end of the data frame
  • the third communication device may be other communication devices other than the receiving end of the data frame and the sending end of the data frame.
  • Data frames may include unicast data frames and continuous data frames.
  • Multi-transmission connection transmission can be a transmission that occupies multiple transmission frequency bands.
  • the transmission frequency band can be the Wi-Fi working frequency band, such as 2.4GHz, 5.8GHz and 6-7GHz, etc.; it can also be the frequency range of the bandwidth occupied by the transmission connection. Among them, the frequency range of the bandwidth occupied by each transmission connection may belong to the same Wi-Fi working frequency band, or may belong to different Wi-Fi working frequency bands.
  • the second communication device may use one of the multiple transmission connections to send a data frame, which is received by the first communication device.
  • the first communication device After the first communication device receives the data frame, it can determine the reception status of the data frame by means of parity check, cyclic redundancy check CRC, etc., and feedback the reception status of the data frame by sending the first confirmation message frame to the second communication device .
  • the first confirmation message frame may be an acknowledgement (ACK) frame or a non-acknowledgement (NACK) frame for the unicast data frame.
  • the first confirmation message frame may be a Block-ACK (Block-ACK) frame for the continuous data frame or the like.
  • the first confirmation message frame may carry feedback information, which is used to indicate the reception of the data frame.
  • the first confirmation message frame may use 1 bit or more bits to indicate the success or failure of the unicast data frame reception, for example, "0" may be used to indicate the failure of the data frame reception.
  • the first confirmation message frame can use a bitmap to indicate the reception of each data block in the continuous data frame.
  • “0” can be used to indicate that the data block has failed to be received, and “1” is used to indicate The data block is successfully received; “1” can also be used to indicate that the data block has failed to be received, and “0” can be used to indicate that the data block is successfully received.
  • the first communication device may indicate the failure of the reception of the data frame by sending the first confirmation message frame, and the second communication device may retransmit the data frame.
  • the second communication device may retransmit the unicast data frame.
  • the first communication device can indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the sub data frame may indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the first confirmation message frame may be provided with duration indication information indicating the duration.
  • the duration indication information is used to indicate that the first communication device continues to occupy the duration of the transmission connection for transmitting the first confirmation message frame.
  • the duration of continuing to occupy the transmission connection may be the duration of continuing to occupy the transmission connection resource, which is equivalent to that the third communication device stops competing for the communication connection within the duration, thereby reducing the transmission interference of the communication connection caused by competition. Improve the quality of data transmission.
  • the duration may be used to inform the third communication device of the duration of the continued occupation of the communication connection.
  • the third communication device determines the duration for the first communication device and the second communication device to continue occupying the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits within the duration
  • the connection remains silent, so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV.
  • the value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration can be determined according to the data frame reception situation. For example, if the data frame is successfully received, only the first confirmation message frame needs to be transmitted subsequently. Therefore, a shorter duration can be set. If the data frame fails to be received, the first confirmation message frame and the retransmission data frame need to be transmitted subsequently. Therefore, a longer duration can be set. In this way, the duration of continuous occupation of the transmission connection can be flexibly set according to the receiving status of the data frame and subsequent transmission requirements. It can reduce the resource waste caused by occupying the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration, thereby improving transmission efficiency.
  • the second communication device may determine the reception status of the data frame according to the feedback information, and determine the duration of continuing to occupy the transmission connection according to the duration indication information. If the data frame fails to be received, the data frame can be retransmitted within the duration. The transmission resource of the retransmitted data frame is no longer obtained through competition and other methods, thereby improving the transmission efficiency of the retransmitted data frame.
  • the third communication device After receiving the first confirmation message frame, the third communication device determines the duration that the first communication device and the second communication device continue to occupy the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits the connection within the duration. Keep silent so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV. The value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration of the transmission connection indicated by the first confirmation message frame determines the duration of the transmission connection indicated by the first confirmation message frame.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration may include: the transmission duration of the retransmitted data frame.
  • the third communication device can maintain silence on the transmission connection when the first communication device and the second communication device transmit the retransmitted data frame, thereby reducing interference to the transmission connection.
  • the transmission resources required to transmit the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the duration may include: the transmission duration of the first determined message frame, the transmission duration of the retransmitted data frame, and the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the third communication device may maintain silence on the transmission connection when the first communication device and the second communication device transmit the first confirmation message frame, the retransmission data frame, and the second confirmation message frame corresponding to the retransmission data frame, so as to reduce the interference. Interference in the transmission connection.
  • the transmission resources required to transmit the first definite message frame, the retransmitted data frame, and the second definite message frame corresponding to the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the transmission duration of the retransmitted data frame is the transmission duration of retransmission of one unicast data frame.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the first determined message frame may further include: retransmission instruction information, and the retransmission instruction information is used to indicate the rebroadcast of the data frame.
  • the second communication device After receiving the first determined message frame, the second communication device retransmits the unicast data frame based on the retransmission instruction information.
  • the retransmission indication information may be located in the Type field of the MAC frame header of the first determined message frame, and/or the Subtype field of the MAC frame header, and/or more data in the MAC frame header (more data) area.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the continuous data frame is divided into multiple data blocks to be sent separately.
  • the data block may be referred to as a data subframe.
  • the first confirmation message frame may be a block confirmation message frame, and a bitmap or the like may be used to indicate the reception status of each data block. For example, "0" can be used in the bitmap to indicate that the data block has failed to be received, and "1" can be used to indicate that the data block has been successfully received.
  • the second communication device After receiving the first definite message frame, the second communication device can only retransmit the data block that failed to be received. In this way, transmission resources can be saved.
  • the transmission duration of the retransmitted data frame may include: the transmission duration of the retransmitted data block, where there may be one or more retransmitted data blocks.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration may include the short inter-frame interval between adjacent data blocks.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B Represents the transmission duration of the first definite message frame and the second definite message frame, (1+n)*SIFS denotes 1+n short inter-frame intervals, and n*data block transmission duration denotes the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • a short inter-frame interval can be set between the first confirmed message frame and the retransmitted data frame to provide processing time for the second communication device.
  • the first communication device After the first communication device receives the retransmitted data frame and sends the second confirmation message for the retransmitted data frame, the first communication device needs to determine the reception status of the retransmitted data frame, etc. Therefore, the 2. Determine to set a short inter-frame interval between message frames to provide processing time for the first communication device.
  • setting the duration based on the time requirement for the retransmission of the data frame can improve the accuracy of the duration and meet the requirement for the retransmission of the data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the two short inter-frame intervals may be the short inter-frame interval between the first determined message frame and the retransmitted data frame, and the short inter-frame interval between the retransmitted data frame and the second determined message frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B represents the first determination
  • the transmission duration of the message frame and the second determined message frame (1+n)*SIFS represents 1+n short inter-frame intervals
  • n*data block transmission duration represents the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the n+1 short interframe interval may be the short interframe interval between the first definite message frame and the retransmitted data frame, the short interframe interval between the retransmitted data frame and the second definite message frame, and n retransmissions.
  • step 203 may include:
  • the duration field in the media access control MAC frame header of the first confirmation message frame determine the duration for continuing to occupy the transmission connection.
  • the duration can be indicated by the duration field in the MAC frame header and the length field in the physical frame header.
  • the second communication device may determine the duration through the duration field. Retransmit data frames etc. within the duration.
  • the MAC frame header can be parsed, and the duration can be determined by the duration field.
  • the third communication device may set NAV according to the duration indicated by the duration field.
  • the third communication device may first parse the physical frame header after receiving the first confirmation message frame, and determine the duration through the length field. Since the third communication device and the first communication device do not belong to the same BSS, the third communication device no longer analyzes the MAC frame header after analyzing the physical frame header. At this time, the third communication device may set NAV according to the duration indicated by the length field. In this way, by indicating the duration in the duration field and the length field respectively, the adaptability of the first confirmation message frame to communication devices of different BSSs is improved.
  • the third communication device After receiving the first confirmation message frame, the third communication device compares the avoidance duration indicated by its NAV. If the duration is longer than the avoidance duration, it means that the third communication device needs to be silent for a longer period of time. Therefore, the duration can be used to update the avoidance duration. duration.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • this exemplary embodiment provides a data transmission method.
  • the data transmission method may be applied to a second communication device of wireless communication.
  • the data transmission method may include:
  • Step 301 Receive the first confirmation message frame
  • Step 302 Set a network allocation vector (NAV, Network Allocation Vector) according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame, where the duration indication information is based on multiple Receiving the first confirmation message frame of the reception status of the data frame in the transmission connection transmission;
  • NAV Network Allocation Vector
  • the wireless communication may be Wi-Fi communication using standards such as IEEE802.11be; the first communication device, the second communication device, and the third communication device may be wireless stations (STA, STAtion) or wireless access in Wi-Fi communication. Access point (AP, Access Point), etc.
  • the data frame may be a data frame that is separately transmitted in each of the multiple transmission connections.
  • the data frame may be a physical layer protocol data frame (PPDU, Physical Layer Protocol Data Unit).
  • the first communication device may be the receiving end of the data frame
  • the second communication device may be the sending end of the data frame
  • the third communication device may be other communication devices other than the receiving end of the data frame and the sending end of the data frame.
  • Data frames may include unicast data frames and continuous data frames.
  • Multi-transmission connection transmission can be a transmission that occupies multiple transmission frequency bands.
  • the transmission frequency band can be the Wi-Fi working frequency band, such as 2.4GHz, 5.8GHz and 6-7GHz, etc.; it can also be the frequency range of the bandwidth occupied by the transmission connection. Among them, the frequency range of the bandwidth occupied by each transmission connection may belong to the same Wi-Fi working frequency band, or may belong to different Wi-Fi working frequency bands.
  • the second communication device may use one of the multiple transmission connections to send a data frame, which is received by the first communication device.
  • the first communication device After the first communication device receives the data frame, it can determine the reception status of the data frame by means of parity check, cyclic redundancy check CRC, etc., and feedback the reception status of the data frame by sending the first confirmation message frame to the second communication device .
  • the first confirmation message frame may be an acknowledgement (ACK) frame or a non-acknowledgement (NACK) frame for the unicast data frame.
  • the first confirmation message frame may be a Block-ACK (Block-ACK) frame for the continuous data frame or the like.
  • the first confirmation message frame may carry feedback information, which is used to indicate the reception of the data frame.
  • the first confirmation message frame may use 1 bit or more bits to indicate the success or failure of the unicast data frame reception, for example, "0" may be used to indicate the failure of the data frame reception.
  • the first confirmation message frame can use a bitmap to indicate the reception of each data block in the continuous data frame.
  • “0” can be used to indicate that the data block has failed to be received, and “1” is used to indicate The data block is successfully received; “1” can also be used to indicate that the data block has failed to be received, and “0” can be used to indicate that the data block is successfully received.
  • the first communication device may indicate the failure of the reception of the data frame by sending the first confirmation message frame, and the second communication device may retransmit the data frame.
  • the second communication device may retransmit the unicast data frame.
  • the first communication device can indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the sub data frame may indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the first confirmation message frame may be provided with duration indication information indicating the duration.
  • the duration indication information is used to indicate that the first communication device continues to occupy the duration of the transmission connection for transmitting the first confirmation message frame.
  • the duration of continuing to occupy the transmission connection may be the duration of continuing to occupy the transmission connection resource, which is equivalent to that the third communication device stops competing for the communication connection within the duration, thereby reducing the transmission interference of the communication connection caused by competition. Improve the quality of data transmission.
  • the duration may be used to inform the third communication device of the duration of the continued occupation of the communication connection.
  • the third communication device determines the duration for the first communication device and the second communication device to continue occupying the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits within the duration
  • the connection remains silent, so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV.
  • the value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration can be determined according to the data frame reception situation. For example, if the data frame is successfully received, only the first confirmation message frame needs to be transmitted subsequently. Therefore, a shorter duration can be set. If the data frame fails to be received, the first confirmation message frame and the retransmission data frame need to be transmitted subsequently. Therefore, a longer duration can be set. In this way, the duration of continuous occupation of the transmission connection can be flexibly set according to the receiving status of the data frame and subsequent transmission requirements. It can reduce the resource waste caused by occupying the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration, thereby improving transmission efficiency.
  • the second communication device may determine the reception status of the data frame according to the feedback information, and determine the duration of continuing to occupy the transmission connection according to the duration indication information. If the data frame fails to be received, the data frame can be retransmitted within the duration. The transmission resource of the retransmitted data frame is no longer obtained through competition and other methods, thereby improving the transmission efficiency of the retransmitted data frame. .
  • the third communication device After receiving the first confirmation message frame, the third communication device determines the duration that the first communication device and the second communication device continue to occupy the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits the connection within the duration. Keep silent so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV. The value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration of the transmission connection indicated by the first confirmation message frame determines the duration of the transmission connection indicated by the first confirmation message frame.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration may include: the transmission duration of the retransmitted data frame.
  • the third communication device can maintain silence on the transmission connection when the first communication device and the second communication device transmit the retransmitted data frame, thereby reducing interference to the transmission connection.
  • the transmission resources required to transmit the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the duration may include: the transmission duration of the first determined message frame, the transmission duration of the retransmitted data frame, and the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the third communication device may maintain silence on the transmission connection when the first communication device and the second communication device transmit the first confirmation message frame, the retransmission data frame, and the second confirmation message frame corresponding to the retransmission data frame, so as to reduce the interference. Interference in the transmission connection.
  • the transmission resources required to transmit the first definite message frame, the retransmitted data frame, and the second definite message frame corresponding to the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the transmission duration of the retransmitted data frame is the transmission duration of retransmission of one unicast data frame.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the first determined message frame may further include: retransmission instruction information, and the retransmission instruction information is used to indicate the rebroadcast of the data frame.
  • the second communication device After receiving the first determined message frame, the second communication device retransmits the unicast data frame based on the retransmission instruction information.
  • the retransmission indication information may be located in the Type field of the MAC frame header of the first determined message frame, and/or the Subtype field of the MAC frame header, and/or more data in the MAC frame header (more data) area.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the continuous data frame is divided into multiple data blocks to be sent separately.
  • the data block may be referred to as a data subframe.
  • the first confirmation message frame may be a block confirmation message frame, and a bitmap or the like may be used to indicate the reception status of each data block. For example, "0" can be used in the bitmap to indicate that the data block has failed to be received, and "1" can be used to indicate that the data block has been successfully received.
  • the second communication device After receiving the first definite message frame, the second communication device can only retransmit the data block that failed to be received. In this way, transmission resources can be saved.
  • the transmission duration of the retransmitted data frame may include: the transmission duration of the retransmitted data block, where there may be one or more retransmitted data blocks.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration may include the short inter-frame interval between adjacent data blocks.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B Represents the transmission duration of the first definite message frame and the second definite message frame, (1+n)*SIFS denotes 1+n short inter-frame intervals, and n*data block transmission duration denotes the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • a short inter-frame interval can be set between the first confirmed message frame and the retransmitted data frame to provide processing time for the second communication device.
  • the first communication device After the first communication device receives the retransmitted data frame and sends the second confirmation message for the retransmitted data frame, the first communication device needs to determine the reception status of the retransmitted data frame, etc. Therefore, the 2. Determine to set a short inter-frame interval between message frames to provide processing time for the first communication device.
  • setting the duration based on the time requirement for the retransmission of the data frame can improve the accuracy of the duration and meet the requirement for the retransmission of the data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the two short inter-frame intervals may be the short inter-frame interval between the first determined message frame and the retransmitted data frame, and the short inter-frame interval between the retransmitted data frame and the second determined message frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous When a data frame is used, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B represents the first determination
  • the transmission duration of the message frame and the second determined message frame (1+n)*SIFS represents 1+n short inter-frame intervals
  • n*data block transmission duration represents the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the n+1 short interframe interval may be the short interframe interval between the first definite message frame and the retransmitted data frame, the short interframe interval between the retransmitted data frame and the second definite message frame, and n retransmissions.
  • step 302 may include:
  • the NAV is set according to the duration of continuing to occupy the transmission connection as indicated by the length field in the physical frame header of the first confirmation message frame.
  • the duration can be indicated by the duration field in the MAC frame header and the length field in the physical frame header.
  • the second communication device may determine the duration through the duration field. Retransmit data frames etc. within the duration.
  • the MAC frame header can be parsed, and the duration can be determined through the duration field.
  • the third communication device may set NAV according to the duration indicated by the duration field.
  • the third communication device may first parse the physical frame header after receiving the first confirmation message frame, and determine the duration through the length field. Since the third communication device and the first communication device do not belong to the same BSS, the third communication device no longer analyzes the MAC frame header after analyzing the physical frame header. At this time, the third communication device may set NAV according to the duration indicated by the length field. In this way, by indicating the duration in the duration field and the length field respectively, the adaptability of the first confirmation message frame to communication devices of different BSSs is improved.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • step 302 may include
  • the duration of avoidance is updated using the duration.
  • the third communication device After receiving the first confirmation message frame, the third communication device compares the avoidance duration indicated by its NAV. If the duration is longer than the avoidance duration, it means that the third communication device needs to be silent for a longer period of time. Therefore, the duration can be used to update the avoidance duration. duration.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • step 302 may include:
  • the NAV In response to the duration of time being less than or equal to the avoidance time period in which the NAV instructs to keep silent on the transmission connection, the NAV is maintained.
  • the present disclosure also provides a data transmission method.
  • a data transmission method when the data frame receiving end responds to receiving the data frame from the data frame sending end, an acknowledgement (ACK) frame is sent to the data frame sending end, so that the data frame sending end can determine Whether the data frame is received correctly.
  • ACK acknowledgement
  • the duration field in the first ACK frame is set as:
  • the transmission duration of a unicast data frame represents the duration of retransmission of the unicast frame
  • 2*ACK represents the transmission duration of the first ACK frame
  • 2*SIFS represents the short interframe interval between the retransmitted unicast data frame and the above-mentioned first ACK frame and second ACK respectively.
  • the data frame receiving end may use a block acknowledgment (BA, Block ACK) for feedback.
  • BA block acknowledgment
  • Block ACK Block acknowledgment
  • the data frame receiving end determines that the continuous data frame has not been received correctly, it sets the duration field in the first block acknowledgment (BA) frame to:
  • n*data block length represents the transmission time length of n data blocks that failed to be received in the retransmission of the continuous data frame, n is the number of retransmitted data blocks; 2*BA represents the transmission time length of the first BA frame, and retransmission The transmission duration of the second BA corresponding to the transmitted n data blocks; 2*SIFS represents the short interframe interval between the retransmitted n data blocks and the first BA frame and the second BA, respectively.
  • the data transmission method provided by the example of the present invention includes: the receiving end of the data frame sends an Acknowledge (ACK) frame to the sender of the data frame, if the data frame is not received correctly, the duration field of the returned ACK frame Set as: 2*ACK transmission duration + 2*SIFS+ data frame transmission duration, where 2*ACK transmission duration includes: the transmission duration of the ACK frame itself and the transmission duration of the ACK frame of the retransmitted data frame.
  • the transmission duration of the data frame indicates the weight
  • SIFS stands for short inter-frame interval.
  • the receiving end of the data frame feeds back the ACK frame. If the data frame is not received correctly, the duration field of the ACK frame is set to: 2*ACK transmission duration + data frame length transmission duration + 2*SIFS.
  • the duration field of the feedback block confirmation frame is set to: 2*BA+n*data frame length+(1+n)*SIFS , Where n represents the number of data frames that need to be retransmitted,
  • n is the same as the number of bits set to "0" in the bitmap bitmap in BA.
  • the NAV After receiving the ACK frame, other stations set their own NAV according to the duration field of the ACK frame. If the time length identified by the duration field in the ACK/BA frame is less than the time length set by the current NAV, the NAV will remain unchanged. For example, the time length identified by the duration field in the ACK/BA frame is greater than the time length set by the previous NAV , The time length of its NAV is updated to be the same as the time length of the duration field.
  • the type (type) and subtype (subtype) fields of the MAC frame header of the ACK/Block ACK frame respectively identify it as a new ACK frame format, and identify that there is a retransmission data frame after the ACK/Block ACK frame is sent.
  • the embodiment of the present invention also provides a data transmission device, which is applied to the first communication device of wireless communication.
  • the data transmission device 100 includes: a first determining module 110 and a sending module 120, wherein,
  • the first determining module 110 is configured to determine the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission, where the duration indication information is used to indicate the duration of the continuous occupation of the transmission connection;
  • the sending module 120 is configured to send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the first determining module 110 includes:
  • the first determining submodule 111 is configured to determine the duration indication information when the data frame fails to be received, wherein the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • the first determining module 110 includes:
  • the second determining submodule 112 is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the first determining module 110 includes:
  • the third determining submodule 113 is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the first determining module 110 includes:
  • the fourth determining submodule 114 is configured to make the duration indicated by the duration indication information 0 when the data frame is successfully received.
  • the embodiment of the present invention also provides a data transmission device, which is applied to a second communication device of wireless communication.
  • the data transmission device 200 includes: a first receiving module 210, a second determining module 220, and a third determining module.
  • Module 230 of which,
  • the first receiving module 210 is configured to receive a first confirmation message frame
  • the second determining module 220 is configured to determine the receiving status of the data frame in the multi-transport connection transmission according to the feedback information in the first confirmation message frame;
  • the third determining module 230 is configured to determine the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame, wherein the duration indication information is based on the data frame The receiving status.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the third determining module 230 includes:
  • the fifth determining submodule 231 is configured to determine the duration of continuing to occupy the transmission connection according to the indication of the duration field in the media access control MAC frame header of the first confirmation message frame.
  • the embodiment of the present invention also provides a data transmission device, which is applied to a third communication device for wireless communication.
  • the data transmission device 300 includes: a second receiving module 310 and a setting module 320, wherein:
  • the second receiving module 310 is configured to receive a first confirmation message frame
  • the setting module 320 is configured to set a network allocation vector NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame, wherein the duration indication information is based on multiple transmissions. The status of the reception of data frames during connection transmission.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the setting module 320 includes:
  • the first setting submodule 321 is configured to set the NAV according to the duration of the continuous occupation of the transmission connection indicated by the duration field in the media access control MAC frame header of the first confirmation message frame
  • the second setting submodule 322 is configured to set the NAV according to the duration of the continuous occupation of the transmission connection indicated by the length field in the physical frame header of the first confirmation message frame.
  • the setting module 320 includes:
  • the third setting submodule 323 is configured to update the avoidance duration by using the duration in response to the duration being greater than the avoidance duration for keeping silent on the transmission connection indicated by the NAV.
  • the setting module 320 includes:
  • the fourth setting sub-module 324 is configured to maintain the NAV in response to the avoidance duration in which the duration is less than or equal to the NAV instruction to keep silent in the transmission connection.
  • the first determining module 110, the sending module 120, the first receiving module 210, the second determining module 220, the third determining module 230, the second receiving module 310, and the setting module 320 may be configured by one or more Central Processing Unit (CPU), Graphics Processing Unit (GPU, Graphics Processing Unit), baseband processor (BP, baseband processor), Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), DSP, programmable logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU) , Micro Controller Unit, Microprocessor, or other electronic components are used to implement the foregoing method.
  • CPU Central Processing Unit
  • GPU Graphics Processing Unit
  • BP baseband processor
  • ASIC Application Specific Integrated Circuit
  • DSP programmable logic Device
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • Fig. 8 is a block diagram showing a device 3000 for data transmission according to an exemplary embodiment.
  • the device 3000 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the device 3000 may include one or more of the following components: a processing component 3002, a memory 3004, a power supply component 3006, a multimedia component 3008, an audio component 3010, an input/output (I/O) interface 3012, a sensor component 3014, And the communication component 3016.
  • a processing component 3002 a memory 3004, a power supply component 3006, a multimedia component 3008, an audio component 3010, an input/output (I/O) interface 3012, a sensor component 3014, And the communication component 3016.
  • the processing component 3002 generally controls the overall operations of the device 3000, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 3002 may include one or more modules to facilitate the interaction between the processing component 3002 and other components.
  • the processing component 3002 may include a multimedia module to facilitate the interaction between the multimedia component 3008 and the processing component 3002.
  • the memory 3004 is configured to store various types of data to support the operation of the device 3000. Examples of such data include instructions for any application or method operating on the device 3000, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 3004 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic Disk Magnetic Disk or Optical Disk.
  • the power supply component 3006 provides power for various components of the device 3000.
  • the power supply component 3006 may include a power management system, one or more power supplies, and other components associated with the generation, management, and distribution of power for the device 3000.
  • the multimedia component 3008 includes a screen that provides an output interface between the device 3000 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor can not only sense the boundary of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
  • the multimedia component 3008 includes a front camera and/or a rear camera. When the device 3000 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 3010 is configured to output and/or input audio signals.
  • the audio component 3010 includes a microphone (MIC), and when the device 3000 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio signals.
  • the received audio signal may be further stored in the memory 3004 or transmitted via the communication component 3016.
  • the audio component 3010 further includes a speaker for outputting audio signals.
  • the I/O interface 3012 provides an interface between the processing component 3002 and a peripheral interface module.
  • the above-mentioned peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.
  • the sensor assembly 3014 includes one or more sensors for providing the device 3000 with various aspects of status assessment.
  • the sensor component 3014 can detect the open/close status of the device 3000 and the relative positioning of components, such as the display and keypad of the device 3000.
  • the sensor component 3014 can also detect the position change of the device 3000 or a component of the device 3000. The presence or absence of contact with the device 3000, the orientation or acceleration/deceleration of the device 3000, and the temperature change of the device 3000.
  • the sensor assembly 3014 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 3014 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 3014 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 3016 is configured to facilitate wired or wireless communication between the device 3000 and other devices.
  • the device 3000 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 3016 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 3016 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the device 3000 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing devices
  • PLD programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • non-transitory computer-readable storage medium including instructions, such as the memory 3004 including instructions, and the foregoing instructions may be executed by the processor 3020 of the device 3000 to complete the foregoing method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Communication Control (AREA)

Abstract

Les modes de réalisation de la présente divulgation concernent un procédé et un appareil de transmission de données, un dispositif de communication et un support de stockage. Le procédé comprend les étapes consistant à : déterminer des informations d'indication de durée en fonction de l'état de réception d'une trame de données pendant une transmission d'une connexion à multiples transmissions, les informations d'indication de durée étant utilisées pour indiquer la durée pendant laquelle une connexion de transmission est occupée en continu ; et envoyer une première trame de message de confirmation, la première trame de message de confirmation contenant des informations de renvoi de l'état de réception et les informations d'indication de durée.
PCT/CN2020/080071 2020-03-18 2020-03-18 Procédé et appareil de transmission de données, dispositif de communication et support de stockage WO2021184272A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2020/080071 WO2021184272A1 (fr) 2020-03-18 2020-03-18 Procédé et appareil de transmission de données, dispositif de communication et support de stockage
US17/912,192 US20230147839A1 (en) 2020-03-18 2020-03-18 Data transmission method and apparatus, communication device, and storage medium
CN202080000558.3A CN113692717A (zh) 2020-03-18 2020-03-18 数据传输方法、装置、通信设备及存储介质

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WO2022262390A1 (fr) * 2021-06-16 2022-12-22 华为技术有限公司 Procédé de retransmission de données, procédé de commande de valeur nav, dispositif électronique et support de stockage

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